package com.mva.NxtNmbr_DAO;

import java.util.ArrayList;

public interface NxtNmbrIO
  {
   // NxtNmbr reader methods
   int                getNN       (String Sys, int Which);
   NxtNmbr            getNxtNmbr  (String Sys);
   ArrayList<NxtNmbr> getNxtNmbrs ();

   // NxtNmbr writer methods
   boolean addNxtNmbr    (NxtNmbr nn);
   boolean updateNxtNmbr (NxtNmbr nn);
   boolean deleteNxtNmbr (NxtNmbr nn);
   boolean clearNxtNmbr  (String Sys, int Which);
  }
